Attachment for the handle of driven tool-equipped flexible shafts



Dec. 22, 1953 2,663,336

P. A. SIGVATHSEN ATTACHMENT FOR THE HANDLE OF DRIVEN TOOL-EQUIPPEDFLEXIBLE SHAFTS "Filed Oct. 25, 1950 /0 44 3 4 INENT0R.4

, Pazz/ 5l lsfiia/hsen "My'inv'ention relates to improvements-in drivenhandle-equipped flexible shafts for operating various'difierent "kindsof tools in which the specific toolis manually held to its work.-

3 The principal object of this invention is tc-provide a novelattachment applicable to the handle of a driven flexible shaft that ismanuallymoved to feed a tool operated thereby to its'work.

-"A further object of this invention is to provide such an attachmentfor positively guiding-a tool to its worka's said attachment is manuallymoved.

- Other objects of this invention will be apparent from the "followingdescription, reference being had to thedrawin'g'.

Whilethe attachment is intended for general use, in connection with adriven flexible shaft holding a toolfor a specific use, it is especiallywell adapted for manually moving and mechanically guiding a tooldesigned. to'remove, by cutting,

old putty"fror'n*"a windcwisash in preparing the same for-reglazing. W-'-Io the-above end, generally stated, the. invention consistsof thenovel devicesand combination of devices hereinafter described anddefined in the claim's. V r w In the accompanying drawing, whichillustrates the invention, like characters indicate like partsthroughout the several views.

Referring to the drawing:

Fig. 1 is an elevational View of an electric motordriven flexible shaft,to the handle of which the attachment is applied, a portion of theflexible shaft being broken away;

Fig. 2 is a view of the attachment removed from the handle of theflexible shaft, partly in plan and partly in horizontal section taken onthe line 2--2 of Fig. 1;

Fig. 3 is a front end elevational View of the attachment, as shown inFig. 2; and

Fig. 4 is a fragmentary detail view partly in plan and partly in sectiontaken on the line 44 of Fig. 1.

The numeral 5 indicates an electric motor on a mount 6 having anupstanding apertured ear I for hanging said mount from a support, notshown.

A flexible shaft 8 in a casing 8 is attached at one end to the armatureshaft 8* of the motor 5 by a coupling 8. On the outer end of theflexible shaft 8 is a clutch 9 that holds a tool 10. A long sleeve-likehandle II is turnably mounted on a sleeve bearing I on the outer endportion of the casing 8 The tool In has spiral cutting edges l2 thatextend longitudinally relative to the axis of said tool and is designedfor cutting old putty to ATTACHMENT'IFOR ,THE H N LE o1 DRIVEN 7 1,Trimi;saatangMstaaisiMimi; i A Application October-'23, 1959f, serial-N191,540-

loiaiihsl (01; 144 134) 2 remove the same from a sash. The parts thusfar described are-conventional except the tool It.

Referring now in detail to the invention, wherein the numeral Itindicates a base having parallel sides and a smooth bottom adaptingtheattachment to slidably rest on a piece of work such as a window sash: Ahandle M extends above and longitudinally of the "baseand is integraltherewith; The base l3 has at its front end an up standing member itthat projects above the handle i i. "The outer face of the base member55, at its upper end portion, is flat, slightly outset, as indicated atit, perpendicular to the bottom of the base l3 and extends at a rightangle to the sides of said base. A hole I! extends through the basemember |5 from front to rear and its axis is parallel to the bottom ofthe base it and perpendicular to the surface it. s r

Ahead l8 has flat contact with the surface 3 on 'thebase extension 55and is provided with a fixed screw stud i9 that extends through the holell and'supports'the head |8 to turn about a horizontal' axis, A wing-nut2% is applied to the screw stud |9,impinges the back of the baseextension l5 and frictionally clamps the head i8 onto said extension. Inthe front of the head it? is a long semi-circular seat 2|, the axisofwhichis perpendicular to the bottom of the base It when said 'head ispositioned as shown in the drawing. A

similar seat 22 is formed in the right-hand side of the head It and alike seat 23 is formed in the left-hand side of said head. Hinge lugs 2dare formed in the head I8 between the two seats 2| and 22 and similarlugs 25 are formed in the head |8 rearwardly of the seat 23. A pair ofvertically spaced notches 26 are formed in the head It between the twoseats 2| and 23 and a screw stud 21 having at one end an eye 28 extendsinto each notch 26 and is secured to the head i3 by a pin 29 thatextends through aligned holes in the head I 8 and the eyes 28. Formed inthe head I8, rearwardly of the seat 22, is a pair of vertically spacednotches 30. A screw stud 3|, having at one end an eye 32, extends intoeach notch 3t and is secured to the head |8 by a pin 33 that extendsthrough aligned holes in said head and the eyes in the screw studs 3 I.

While the seats 2|, 22 and 23 are shown perpendicular to the bottom ofthe base 3, they may be positioned obliquely to said bottom by turningthe head I8 about the axis of the screw stud 9.

As shown, the attachment is secured to the handle M by placing saidhandle in the seat 2| and rigidly holding the same therein by asemi-circular clamping band 34 of substantially the same length as theseats 2 I, 22 and 23. This clamping band 34 has on one of itslongitudinal edges open hinge lugs 35 which fit between the hinge lugs24 and are removably attached thereto by a fixed hinge pin 36. On theother longitudinal edge of the clamping band 34 is a flange 31 havingtherein a pair of notches 38 through which the screw studs 21 project.Spacing sleeves 39 and wingnuts Mi are applied to the screw studs 21 andlock the clamping band 34 to the head it.

To mount the handle Hi in the seat 22, the clamping band 3% is removedfrom the hinge pin 36, turned end for end and again interlocked withsaid hinge pin. In this position of the; clamping band 35-, it issecured to the head it by the screw studs 3|.

To mount the handle is, in the seat, 23;, the:

clamping band St is removed from the hinge pin 33, again turned end forend and held interlocked with the hinge lugs by a fixed hinge pin 4i andsecured by the screw studs 2? to the head [8.

The various seats 2 i, and 2% permit different lateral adjustments ofthe tool it relative to the base !3. The tool may be raised or loweredby vertically adjusting the handle H in the respective seats 2 l 222 and23.

A pair of guides 42 for the base it is provided. Each guide 52 is in theform of a rod #23, one end. portion being bent laterally a sleeve-lii:ecollar 4 t mounted thereon. These rods extend through transverse holesin the base 13 near each end portion thereof. rod :3 is held whereadjusted relative to the base 53 by a set screw 45.

Obviously, the guides 62 may be endwise adjusted or turned to swing therollers at about the axis of the rods 2-3, to position said rollers forengagement with an object to guide the same. With the rollers $4 incontact with an object to guide the base l3, the attachment may bemanually slid onthe object on which it rests to feed the tool it to itswork.

The drawing illustrates a commercial form of the invention, but it willbe understood that the same is capable of certain modifications as todetails of construction, arrangement and combination of parts within thescope or" the invention herein disclosed.

What I claim is:

l. A tool for removing old putty from a window sash including ahandle-equipped rectangular elongated base having a smooth flat bottom,means mounted on the base at one end thereof for vertical adjustment andhaving a driven member for holding a tool, and a round tool of aconstant diameter held by the driven member with its longitudinal axisperpendicular to the bottom of the base, said tool having a spiralcutting edge, thelower end of the tool being flat and perpendicular tosaid axis.

2. The structure defined in claim 1, further including an independentguide at each end portion of the base, each guide including a long redextending endwise through a transverse hole in the base, one end portionof each rod being bent laterally and having mounted thereon asleeve-like member, and means for holding each rod where endwiseadjusted relative to the base.

'3.' A base member having an elongated, rectangular fiat bottom and ahandle by means of which said base member may be slidably moved directlyon apiece of work, saidbase member also having, at one end, an uprightextension provided with an outer face that is perpendicular to thebottom or" the base member, spaced thereabove and outwardly offset from.end of the base member, an outwardly projecting head attached to saidouter face, said head having clampin means for holding the sleeve-litrehandle of a tool having a driven cutter extending below the last notedhandle, a pair of laterally spaced guides for the base member, eachincluding a rod extending enclwise through a transverse hole in the basemember, one end portion of each rod being turned downwardly, and meansholding the rod in endwise adjustment.

PAUL A. SIGVATHSEN.

7 References Cited in the file of this patent UNITED STATES. PATENTSNumber Name Date 768,366 Hughes Aug. 23, 1904. 1,321,240 Oliva et a1Nov. 11, 1919 1,495,796 Potter May 27, 192a 1,958,203 Pfau May 8, 19342,255,541 Dremel Sept. 9 194:1

